Question

PLEASE HELP!! The black,white and grey crayons make up 20% of a set of colours.How many colours are in the set alltogether?

Answer 1

15 colours

Explanation:

there are 3 colors, black, white and grey.

3 colors already makes up 20%, so 3 for 20%

In a whole set, it would be 100% (a whole), and you need 5 times 20% to make it 100%.

So, multiple the 3 by 5, then multiply the 20% by five:

3*5 = 15

20%*5 = 100%

Your answer is 15 colours in the whole set!